#include<stdio.h>
int main()
{
	const char* s = "stdout!\n";
	const char* s2 = "stderr!\n";
	fprintf(stdout,"%s",s);
	fprintf(stderr,"%s",s2);
	fprintf(stdout,"%s",s);
	fprintf(stdout,"%s",s);
	fprintf(stdout,"%s",s);
	fprintf(stderr,"%s",s2);
	fprintf(stderr,"%s",s2);
	fprintf(stderr,"%s",s2);
	return 0;
}
